Table 1. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1⋯O3i	0.83 (2)	1.94 (2)	2.7426 (13)	164 (2)
O2—H2⋯O1ii	0.79 (2)	1.97 (2)	2.7424 (14)	169 (2)
O3—H3⋯O2iii	0.86 (2)	1.85 (2)	2.7086 (16)	173.3 (17)

Symmetry codes: (i) ; (ii) ; (iii) .